GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM) Scan Tool Output Controls
Table 2: Heating and Air Conditioning Scan Tool Output Controls
Table 3: PCM Scan Tool Output Controls

Body Control Module (BCM) Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

HVAC Lamp

Lamp Dimming Test

The scan tool displays On or Off selections. This function allows you to command the HVAC control module lights ON and OFF.

Heating and Air Conditioning Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Blower Motor

Miscellaneous Test

The scan tool displays Off or On selections. This function allows you to command the blower motor on at full speed or off.

Left Mix Motor

Miscellaneous Test

The scan tool displays Off or On selections. Selecting Off allows you to command the motor to its minimum (cold) position. Selecting On allows you to command the motor to its maximum (hot) position.

Right Mix Motor

Miscellaneous Test

The scan tool displays Off or On selections. Selecting Off allows you to command the motor to its minimum (hot) position. Selecting On allows you to command the motor to its maximum (cold) position.

Sol. 1 -- Defroster

Solenoid Test

The scan tool displays Off or On selections. This function allows you to command the solenoid ON or OFF.

Sol. 2 -- Heater

Solenoid Test

The scan tool displays Off or On selections. This function allows you to command the solenoid ON or OFF.

Sol. 3 -- Defrost/Heater

Solenoid Test

The scan tool displays Off or On selections. This function allows you to command the solenoid ON or OFF.

Sol. 4 -- Air Inlet

Solenoid Test

The scan tool displays Off or On selections. This function allows you to command the solenoid ON or OFF.

Sol. 5 -- A/C Mode

Solenoid Test

The scan tool displays Off or On selections. This function allows you to command the solenoid ON or OFF.

PCM Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

A/C Clutch

Engine Output Controls

The scan tool displays On or Off selections. This function allows you to command the A/C compressor clutch relay ON or OFF.